// recv(c->fd, b->last, size, MSG_PEEK);
ngx_memcpy(b->last,"GET / HTTP/1.1\r\n", sizeof("GET / HTTP/1.1\r\n"));
b->last += sizeof("GET / HTTP/1.1\r\n") - 1;
ngx_memcpy(b->last,"Host: 10.211.55.7:4455\r\n", sizeof("Host: 10.211.55.7:4455\r\n"));
b->last += sizeof("Host: 10.211.55.7:4455\r\n") - 1;
ngx_memcpy(b->last,"Connection: keep-alive\r\n\r\n", sizeof("Connection: keep-alive\r\n\r\n"));
b->last += sizeof("Connection: keep-alive\r\n\r\n") - 1;
ngx_log_error(NGX_LOG_ERR, c->log, 0,
        "recv new :n= %d n1 = %d\"%*xs\"",n,n,n,b->pos);
// b->last += n;
